package com.yc.rh.filters;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class CharacterFilter implements Filter {
	private String myEconding="utf-8";
	
	public void destroy() {
		
	}

	public void doFilter(ServletRequest arg0, ServletResponse arg1,FilterChain arg2) throws IOException, ServletException {
		HttpServletRequest request=(HttpServletRequest) arg0;
		HttpServletResponse response=(HttpServletResponse) arg1;
		
		request.setCharacterEncoding(myEconding);
		response.setCharacterEncoding(myEconding);
		
		response.setContentType("charset="+myEconding);
		
		arg2.doFilter(arg0, arg1);
	}

	public void init(FilterConfig arg0) throws ServletException {
		//读取用户的配置参数
		String encoding=arg0.getInitParameter("encoding");
		if(encoding!=null){
			myEconding=encoding;
		}
	}

}
